Table 3.

Sedimentation volume of ZnO suspensions prepared from Aloe weloensis, acacia, and NaCMC at different concentrations.

Suspending agent	Concentration (% w/v)	Sedimentation volume
		Time (days)							Time (weeks)
		1	2	3	4	5	6	7	2	3	4
NaCMC	1	1	0.95	0.95	0.93	0.93	0.93	0.93	0.9	0.86	0.8
	2	1	0.98	0.98	0.96	0.95	0.93	0.93	0.93	0.93	0.93
	4	1	1	0.983	0.98	0.98	0.96	0.96	0.96	0.96	0.96
Acacia	1	1	0.83	0.83	0.8	0.8	0.76	0.73	0.56	0.33	0.23
	2	1	0.9	0.9	0.9	0.9	0.9	0.9	0.8	0.73	0.7
	4	1	0.9	0.9	0.93	0.9	0.9	0.9	0.9	0.5	0.46
Aloe weloensis mucilage	1	1	0.9	0.83	0.8	0.76	0.66	0.66	0.46	0.43	0.4
	2	1	0.93	0.86	0.83	0.76	0.73	0.5	0.5	0.48	0.43
	4	1	0.96	0.9	0.86	0.8	0.76	0.67	0.5	0.53	0.51